Doweling-machine.



PATENTED JAN. 2, 1906.

3. L. LOVETT. v DOWELING MACHINE.

AYPLIOATION FILED MAY 10, 1905- UNITE D STATES PATENT OFFIOE.

DOWELlNG-IVIACHINE.

Specification of Letters Patent.

Patented Jan. 2, 19b 6.

Application filed May 10, 1905 Serial No. 259,657.

To (all whom, it 1 1 147 concern:

Be it known that I, JAMES L. LovETT, a citizen of the United States,residing at New London, county of Chester, and State of Pennsylvania,have invented a certain new and useful Improvement in Doweling-Machines,of which the following is a specification.

Myinvention relates to a new and useful improvement indoweling-machines, and has for its object to provide a machine whichwill act as a gage or adjustable gig, so that the holes in the twopieces of wood to be joined together can be bored accurately, so that aperfect joint will be made when the dowelpins enter said holes and thetwo pieces are joined together.

With these ends in view this invention consists in the details ofconstruction and combination of elements hereinafter set forth and thenspecifically designated by the claims.

In order that those skilled in the art to which this inventionappertains may understand how to make and use the same, the constructionand operation will now be described in detail, referring to theaccompanying drawings, forming a part of this specification, in whichFigure 1 is a plan view of my improved machine; Fig. 2, a rear elevationof the machine; Fig. 3, a cross-section through the center of themachine.

A represents the base-plate, and upon this base-plate is arranged astrip B, having graduations thereon the same as a rule.

O is the slot formed through the base-plate and extending parallel withthe rule or longitudinally of the plate. This slot 0 is for the guidesof the gage-block D, which gageblock is secured in place by thethumbscrew D. The material to be bored is adapted to abut against thisgage-block.

E is the back of the machine, which rises at right angles to the plate Aand forms a straight edge, against which the material is adapted to beplaced.

E is an ear extending outward from the top of the back E at the centerand extends over the plate A.

F is a screw threaded through the ear, and this screw has swiveled onthe lower end a disk F, so that when the screw. is forced downward withthe disk against the material operated upon it will form a clamp to holdthe material in place, with one side of the material against the back Eand the end against the gage-block D.

G is a drill or auger guide which is in the form of an elongated blockhaving different size circular openings G formed therethrough. Thisblock is arranged in the center of the machine and adapted to slidebetween the guides E, arranged at the back of the device, the forwardedge of the guide G coming flush with the front side of the back E.

H is a strip secured to the outside of one the lugs or guides E, and theside of the drill-guide G is curved, and in this groove fits one edge ofthe strip H, so as'to prevent the drill moving either forward orbackward. The strip H is marked with graduations, as shown in Fig. 2,and straight lines can be drawn from the center of each of the holes Gto the edge, so that the drill-guide can be set with any hole in anyparticular position. The thumb-screw I, threaded through one of the lugsE and bearing against the drillguide block G, serves to hold thedrill-guide in any position set.

In operation when it is desired to bore the holes for dowel-pins in twopieces to be joined together it is first determined where the dowel-pinsshall be placed. Then one piece of the material is secured in themachine, the gage-block D being moved until the point where thedowel-pin is to be inserted is directly behind the center of the blockG. Then by screwing down the clamp F the material is held in thisposition. Then the block is moved vertically in its guideway until theproper size hole is brought to the proper place upon the material. Thenthe block G is secured in place, and by placing the drill or or augerthrough the hole said drill or auger 9 is guided so that the hole formedwill be perfectly straight and true, and the companion piece to be boredcan then be placed in the machine and clamped in exactly the same placeas the former piece, and whenthe hole is bored and the dowel-pinsinserted in place a perfect joint is made, the edges of the materialcoming together accurately. It will thus be seen that the holes can bebored for dowel-pins without any complicated measurement and can be donevery quickly, and besides when the holes are bored they are perfectlystraight and true, so thatthe pieces will be in perfect alinement whenjoined together.

Of course any suitable means could be used for clamping the material inplace, or any suitable means could be'used for guiding the drill-block Gand securing the same in place orfor securing the gage-block Din place.Therefore I do not wish to be limited to the exact construction hereshown, as slight modifications could be made without departing from thespirit of the invention.

Having thus fully described my invention, what I claim as new and usefulis 1. In a machine of the character described, a table upon which thematerial to be bored is adapted to lie, a vertical back formed with thetable against which one edge of the material is adapted to be placed, amovable gage-block adapted to abut against the end of the material,means for clamping the material downward upon the table, a verticalsliding drill-block arranged in the back of the device, said drill-blockprovided with different size openings formed therethrough, said openingsto form a guide for the drill, and means for securing said block in anyposition placed, as and for the purpose specified.

2. In a device of the character described, a plate upon which thematerial is adapted to rest, a plate forming a back extending at rightangles from the rearward edge of the first-named plate against which oneedge of the material is adapted to lie, the bed-plate being providedwith a longitudinal guideway, a gage-block adapted to slide in saidlongitudinal guideway and abut against the end of the material, meansfor securing said gage-b1ock in any position placed, means for clampingthe material downward upon the bed-plate, two vertical lu 's extendingrearward from the back, a drilI-block adapted to slide verticallybetween said lugs, said drill- 4o block provided with lateral openingsof different size formed therethrough from the front to the rear, saidopenings adapted to form guides for the drill, and means for securingsaid drill-block in any position placed, as and for the purposespecified.

3. In a device of the character described, a bed plate havinggraduations marked thereon, said bed-plate provided with a longitudinalslot, a gage-block adapted to slide in said slot, means for securingsaid gageblock in place, a back rising at right angles to the bed-plateagainst which one edge of the material is adapted to rest, an earextending forward from the upper end of the back, a clamp-screw threadedthrough said ear and adapted-to be forced downward upon the material, adrill-guide block adapted to slide vertically in the back, the forwardedge of the drill-block being flush with the front face of the back,said drill-block being provided with different size holes boredtherethrough from the front to the back, said holes being arranged oneabove the other, graduations arranged alongside of the drillblock toenable the block to be moved so that any one hole can be brought to acertain point, and means for securing the block in png position set, asand for the purpose speci- 1e In testimony whereof I have hereuntoaffixed my signature in the presence of two subscribing witnesses.

JAMES L. LOVETT.

Witnesses J AMES M. SnoPE, WM. JONES.

